Most of the Dutch tourists currently spending their holidays in the south of France have experienced little trouble from forest fires raging in the area, tour operators Neckermann Reizen and Vrij Uit said to RTL Nieuws on Wednesday.

Forest fires have been raging in southern France near St Tropez and on Corsica since early this week. But of the tourists who booked holidays through the two companies, none had to be evacuated or had to leave the area prematurely. "Our customers don't notice much about that", a spokesperson said to the broadcaster. "They're enjoying their holiday."

On Monday Dutch travel association ANWB issued a warning over two child car seats that are unsafe. According to the association, children strapped into the Recaro Optia or Jané Grand One seats could risk sustaining serious injury if there is an accident.

With the region Zuid starting summer holiday this afternoon, the ANWB expects the roads to be extremely busy on Friday and Saturday, both in the Netherlands and abroad. Be ready to spend time in traffic jams, according to the service, AD reports.

Heavy rainfall across the Netherlands caused problems in many places on Wednesday morning. On Tuesday Weerplaza expected up to 50 millimeters of rain to fall in some places on Wednesday. Around 10:00 a.m. the most rain had fallen in Zuid-Holland and Zeeland, about 34 millimeters, according to the weather service.

Traffic information service ANWB expects heavy traffic on Dutch roads on Friday afternoon as the May school holidays begin for primary and secondary schools across the country, AD reports.

The ANWB expects that most people who are vacationing in the Netherlands will leave for their destinations today. Roads to recreation areas in the middle and south of the Netherlands are expected to be especially busy. "Traffic jams are most likely on the highways around Amersfoort (A1, A28), the A12 from Utrecht to Arnhem and the roads to the Holland- and Zeeland coast", ANWB warns.

Traffic jams in the Netherlands are increasing due to the aging population, according to figures from the ANWB. Traffic jams are especially increasing during evening rush hour due to the large amounts of recreational traffic on the roads, the ANWB concluded by comparing traffic during the first three months of this year with the same period in 2016, the Telegraaf reports.

The portion of the southbound A4 expressway that travels through the Schiphol Tunnel will remain closed at least through the evening rush hour period, and possibly into Wednesday, Dutch public works department Rijkswaterstaat announced Tuesday afternoon. The decision was made when engineers were unable to restart exhaust fans in the tunnel during safety testing.

The entire Schiphol tunnel from Amsterdam (A4) to The Hague is still closed on Tuesday morning following a fire on Monday afternoon. Traffic information service ANWB calls on motorists to avoid Amsterdam during rush hour and to travel to the airport by train, AD reports.

Traffic information services ANWB and VID also warned of icy roads. Both reported several traffic accidents already, though it is unclear whether any of these are related to the slickness on the roads.

Motorists are warned that to adjust their driving behavior - slow down and keep a safe following distance. Keep a close eye on weather and traffic reports. The slickness should dissipate during the course of the morning. The southeast and eastern parts of the country will experience it the longest.

Icy roads caused numerous accidents across the Netherlands on Tuesday morning, despite a warning from meteorological institute KNMI for drivers to slow down and keep safe following distances. The code yellow weather warning affected the entire country except for the Wadden islands.

According to traffic information service VID, there were "various" accidents on the A58 highway near Heinkenszand due to icy, slippery roads. There were also accidents on the A16 near Breda Noord, on the A9 towards Alkaar near Badhoevendorp and on the A2 near Utrecht.

For the third day in a row meteorological institute KNMI issued a weather warning for slick roads and reduced visibility due to fog. The warning covers the entire Netherlands. "Adjust speed and keep a sufficient following distance", the KNMI warns. "Follow weather reports and warnings."

According to the KNMI, in some places visibility will be reduced to less than 200 meters. Local roads in particular may be icy and slick, as gritters don't always reach them.

Foggy weather on Wednesday morning could mean delays for flights to and from Schiphol, the airport said on Twitter. "Visibility and airport capacity are expected to remain reduced during the day", Schiphol wrote.

Dutch motorists spent more time in traffic more frequently in 2016, with a 12 percent increase in traffic severity, NOS reports based on figures from the ANWB. Traffic is expected to increase further in the coming years.

According to the broadcaster, the increase in traffic severity - the length of the traffic jam times its duration - has to do with the improving economy. The increase started in 2014, when the economy started picking up after the financial crisis. In 2015 traffic severity increased by 20 percent.

The next Dutch government should include a Minister for Mobility, who must focus on improving the connection in and between cities to prevent a further increase in traffic jams and accidents, according to a manifest set up by a coalition consisting of seven major public transporters and car companies, NOS reports.

The new Koning Willem-Alexander Tunnel on the A2 under Maastricht officially opened to traffic on Friday morning. And while there is a traffic jam on the A2 from Eindhoven to Maastricht, it is unrelated to the tunnel, according to the ANWB. Motorists should take 20 minutes of extra travel time into account because of this traffic jam.

An accident involving four cars brought traffic to a near standstill in Utrecht on Thursday morning. The accident happened just outside the Leidsche Rijn tunnel towards Amsterdam. Only one lane in the tunnel is currently open, according to traffic information service VID.